Shock-absorber.



U. M. BURTON.

SHOCK ABSORBER.

APPLIOATION FILED JUNE 9, 1910.

Pat'entd Mar. 14, 1911.

LI. 1 Z

' to which the present inventionis appliedv as hereinafter more fully described, claimed,

a coiled spring operates in the upper termi- UNITED s Airns PATENT oFF oE;

CHARLES m. BURTON, or NEW YORK, N. Y.

SHOCIL-ABSORBER.

V Specification of Letters Patent.

Application filedgliune 9, 1910. Serial No. 565,931.

To all whom it may concern: v

Be it known that 1, CHARLES M. BURTON, ar 'citizen of the United States; residing-at. New York, in the county of New York and State of New York, have invented certain new "andusc'ful Improvements in Shck .hsorbrrs, of which the'followingis a'spccification.

'.lhis invention relates to new and useful improvements in shock absorbers, and is designed particularly to' ctmstruct a device of" this nature wherein the unevenness of roads which occurs during the ordinarytravel will he taken up hy'the springs of the vehicle while all exceptional shocks and the like will he taken up by the shock absorber, said shock absorber being adjustable'to the unevenness ct theroad over whichiitis adapted to travel.

With the abov and other objects in view, this invention consists in the construction, combination, and arrangement of parts, all

and illustrated in the accompanying drawings, whcrcin Figure 1 is a central vertical section of a device Eonstructed in accordance with the present invention; Fig. 2 is-a side elevationof the present invention, illustrating the attaclnncnt thereof to an automobile.

The present invention resides in the provision at a cylinder embraced by a series of spaced hands and having its upperv and lower terminals interiorly threaded. The lower terminal of said cylinder is supported.- hy the axle of the vehicle while the upper terminal rests substantially free. The lower terminal is provided with an adjusting nut operating in the threads thereof which is held invarious positions by'a jam nut operating against the lower face thereof, said adjusting nut carrying a coiled spring, the position of which in the cylinder is regulated by the position of the adjusting nut.

A centra'lly' orificed adjusting nut carrying nal of the cylinder and is rctainedin various positions by a central'oriliced jam nut which operates against the upper'face of i said adjusting nut. A iston rod recipro- 1 eates through the orifice adjusting and jam i nuts in the upper terminal of the cylinder 5 and is suspended by an arm to the frame of the vehicle, said piston rod having at its lower terminal a piston on .'each side of which is mounted a rubber plate. Referring more particularly'to the drawings lit-indicates a cylinder having the spaced bracing bands 11 encircling the some and the interior'threads 12 at each estremity thereof. Au adjusting! nut 13 operates on the'threads 12 located adjacent thew'lower terminal of the cylinder 10"and carries ;onthe inner face thereof the coil spring 14 whieh'is of any suitable construction and strength. jam nut15 likewise operates on the threads 12 adjacent to the nut 13 and cooperates with the latter. tQ retain the same in various positions in the cylinder. It will be understood that by the adjustment'of the nuts 13 and 15 the location of the spring 14 in the cylinder 10 will be adjusted, increasing or decreasing the distance thereof from the piston as ,herein- 7 5 after more fullydescrihed. A similar adjusting nut 16 operates on the threads 121 adjacent to the upper terminal of the cylinder 10 carrying the coil spring '17 thereon and is retained in various .positions in the cylinder by the jam nut 18 operating against the upper face thereof, said nuts 16 and 18 being provided with the registering orifices 19 through which the/piston hereinafter more fully described-operates, and extends through the center of the coiled spring.

The lower terminal of'the cylinder 10 has mounted thereon the upwardly curved arm 20 which is provided at its outer ter- -minal with the transverse. channel plate 21.

The axle 22 is clamped in this transverse channel plate the. clamping plate 23 cooperating therewith. 4

The piston rod 24; which reciprocates in the openings 19 of the nuts 16 and 18 and extends through the center of thespring 17, is provided at its lower terminal with a solid detachable piston'25.- said piston having on each face thereof thcrubber cushion 1 0 .36. said cushions adapted to bear against the'inuer terminals of the springs 14: and 17. The upper terminal of the piston rod 24 is provided with a-=plate 27 to which is secured or formed the eye 28. An arm 29 is secured to the frame A of the automobile or vehicle and extends outwardly over the upper terminal of the piston rod where it is provided with an eye 30 which engages the eye 28 o'fsaid piston rod, thus supporting the piston and piston rod.

From this construction it will readily be seen that by the adjustment of the nuts 13 and 16"the position of the springs'in the-- cylinder is likewise adjusted and during the. ordinary unevenness of the road the springs of the vehicle will absorb all of the iould an exceptional shock occur the alDSOI'bBIAVlll operate, causing the cylinder v to inove upwardly on the piston rod thereby creating a contact between the lower face of said plston and the spring 14 and on the rebound the shock will be absorbed by the contact of the upper face 1 of the: piston and the spring 17. It will be understood, therefore, that the present in vention may be adjusted to the type of road over which the vehicleis adapted to operate,

that is, the absorber may be adjustedso that all of the shock will be absorbed by the springs of the-vehiclefand so that the ordinary shocks will: be absorbed thereby while the greater and more damaging.

shocks be absorbed by the present invention;

Having thus described my invention, what 1s claimed as new-1s:

A device of the class-described, comprising a cylinder havinginteriorly formed threads -.at each terminal thereof, nuts adapted to operate on said threads, springs carried by said nuts the inner terminals of said springs being spacedand'the upper of said nuts having'a-n opening therein, a piston rod adapted to reciprocate in said opening and through theupper of said springs,

a piston detachably carried at. thelowerten,

mina-l of said rod haying a rubber collar on 40 each side thereof. an arm carried at the lower terminal of said cylinder having a transverse channeledplate at its outer ternnnal, a clamping plate cooperating therewith, an eye formed at the upper end of Rm GARDNER,

ELMER T. SMITH. 

